I disagree on the SAS70.

Sure, it's an audit compliance document that does nothing of itself to ensure compliance. But: somebody asked and looked at this stuff, and there's absolutely no reason you can't do as much (or little) inspection as you want. Having been on a few DC audits myself, it's an educational process. And still ... onsite redundant generators, fuel, fuel provider contracts, backup batteries, etc., still mean little if there's a fault somewhere in the system (the past few major outages I've experience directly or have read about all included all of the above, but something somewhere failed to cut in or out appropriately).

Nobody's got anything on the Krell though.